| /* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. |
| Contributed by Andy Vaught |
| |
| This file is part of the GNU Fortran 95 runtime library (libgfortran). |
| |
| Libgfortran is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| In addition to the permissions in the GNU General Public License, the |
| Free Software Foundation gives you unlimited permission to link the |
| compiled version of this file into combinations with other programs, |
| and to distribute those combinations without any restriction coming |
| from the use of this file. (The General Public License restrictions |
| do apply in other respects; for example, they cover modification of |
| the file, and distribution when not linked into a combine |
| executable.) |
| |
| Libgfortran is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Libgfortran; see the file COPYING. If not, write to |
| the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| |
| /* Implement the non-IOLENGTH variant of the INQUIRY statement */ |
| |
| #include "config.h" |
| #include "libgfortran.h" |
| #include "io.h" |
| |
| |
| static const char undefined[] = "UNDEFINED"; |
| |
| |
| /* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */ |
| |
| static void |
| inquire_via_unit (st_parameter_inquire *iqp, gfc_unit * u) |
| { |
| const char *p; |
| GFC_INTEGER_4 cf = iqp->common.flags; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0) |
| *iqp->exist = iqp->common.unit >= 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0) |
| *iqp->opened = (u != NULL); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0) |
| *iqp->number = (u != NULL) ? u->unit_number : -1; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0) |
| *iqp->named = (u != NULL && u->flags.status != STATUS_SCRATCH); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0 |
| && u != NULL && u->flags.status != STATUS_SCRATCH) |
| fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0) |
| { |
| if (u == NULL) |
| p = undefined; |
| else |
| switch (u->flags.access) |
| { |
| case ACCESS_SEQUENTIAL: |
| p = "SEQUENTIAL"; |
| break; |
| case ACCESS_DIRECT: |
| p = "DIRECT"; |
| break; |
| case ACCESS_STREAM: |
| p = "STREAM"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad access"); |
| } |
| |
| cf_strcpy (iqp->access, iqp->access_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0) |
| { |
| if (u == NULL) |
| p = inquire_sequential (NULL, 0); |
| else |
| { |
| /* disallow an open direct access file to be accessed sequentially */ |
| if (u->flags.access == ACCESS_DIRECT) |
| p = "NO"; |
| else |
| p = inquire_sequential (u->file, u->file_len); |
| } |
| |
| cf_strcpy (iqp->sequential, iqp->sequential_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0) |
| { |
| p = (u == NULL) ? inquire_direct (NULL, 0) : |
| inquire_direct (u->file, u->file_len); |
| |
| cf_strcpy (iqp->direct, iqp->direct_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0) |
| { |
| if (u == NULL) |
| p = undefined; |
| else |
| switch (u->flags.form) |
| { |
| case FORM_FORMATTED: |
| p = "FORMATTED"; |
| break; |
| case FORM_UNFORMATTED: |
| p = "UNFORMATTED"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad form"); |
| } |
| |
| cf_strcpy (iqp->form, iqp->form_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0) |
| { |
| p = (u == NULL) ? inquire_formatted (NULL, 0) : |
| inquire_formatted (u->file, u->file_len); |
| |
| cf_strcpy (iqp->formatted, iqp->formatted_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0) |
| { |
| p = (u == NULL) ? inquire_unformatted (NULL, 0) : |
| inquire_unformatted (u->file, u->file_len); |
| |
| cf_strcpy (iqp->unformatted, iqp->unformatted_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0) |
| *iqp->recl_out = (u != NULL) ? u->recl : 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_STRM_POS_OUT) != 0) |
| *iqp->strm_pos_out = (u != NULL) ? u->strm_pos : 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0) |
| *iqp->nextrec = (u != NULL) ? u->last_record + 1 : 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0) |
| { |
| if (u == NULL) |
| p = undefined; |
| else |
| switch (u->flags.blank) |
| { |
| case BLANK_NULL: |
| p = "NULL"; |
| break; |
| case BLANK_ZERO: |
| p = "ZERO"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad blank"); |
| } |
| |
| cf_strcpy (iqp->blank, iqp->blank_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0) |
| { |
| if (u == NULL || u->flags.access == ACCESS_DIRECT) |
| p = undefined; |
| else |
| switch (u->flags.position) |
| { |
| case POSITION_REWIND: |
| p = "REWIND"; |
| break; |
| case POSITION_APPEND: |
| p = "APPEND"; |
| break; |
| case POSITION_ASIS: |
| p = "ASIS"; |
| break; |
| default: |
| /* if not direct access, it must be |
| either REWIND, APPEND, or ASIS. |
| ASIS seems to be the best default */ |
| p = "ASIS"; |
| break; |
| } |
| cf_strcpy (iqp->position, iqp->position_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_ACTION) != 0) |
| { |
| if (u == NULL) |
| p = undefined; |
| else |
| switch (u->flags.action) |
| { |
| case ACTION_READ: |
| p = "READ"; |
| break; |
| case ACTION_WRITE: |
| p = "WRITE"; |
| break; |
| case ACTION_READWRITE: |
| p = "READWRITE"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad action"); |
| } |
| |
| cf_strcpy (iqp->action, iqp->action_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_READ) != 0) |
| { |
| p = (u == NULL) ? inquire_read (NULL, 0) : |
| inquire_read (u->file, u->file_len); |
| |
| cf_strcpy (iqp->read, iqp->read_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0) |
| { |
| p = (u == NULL) ? inquire_write (NULL, 0) : |
| inquire_write (u->file, u->file_len); |
| |
| cf_strcpy (iqp->write, iqp->write_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0) |
| { |
| p = (u == NULL) ? inquire_readwrite (NULL, 0) : |
| inquire_readwrite (u->file, u->file_len); |
| |
| cf_strcpy (iqp->readwrite, iqp->readwrite_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0) |
| { |
| if (u == NULL || u->flags.form != FORM_FORMATTED) |
| p = undefined; |
| else |
| switch (u->flags.delim) |
| { |
| case DELIM_NONE: |
| p = "NONE"; |
| break; |
| case DELIM_QUOTE: |
| p = "QUOTE"; |
| break; |
| case DELIM_APOSTROPHE: |
| p = "APOSTROPHE"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad delim"); |
| } |
| |
| cf_strcpy (iqp->delim, iqp->delim_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0) |
| { |
| if (u == NULL || u->flags.form != FORM_FORMATTED) |
| p = undefined; |
| else |
| switch (u->flags.pad) |
| { |
| case PAD_NO: |
| p = "NO"; |
| break; |
| case PAD_YES: |
| p = "YES"; |
| break; |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad pad"); |
| } |
| |
| cf_strcpy (iqp->pad, iqp->pad_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_CONVERT) != 0) |
| { |
| if (u == NULL) |
| p = undefined; |
| else |
| switch (u->flags.convert) |
| { |
| /* l8_to_l4_offset is 0 for little-endian, 1 for big-endian. */ |
| case CONVERT_NATIVE: |
| p = l8_to_l4_offset ? "BIG_ENDIAN" : "LITTLE_ENDIAN"; |
| break; |
| |
| case CONVERT_SWAP: |
| p = l8_to_l4_offset ? "LITTLE_ENDIAN" : "BIG_ENDIAN"; |
| break; |
| |
| default: |
| internal_error (&iqp->common, "inquire_via_unit(): Bad convert"); |
| } |
| |
| cf_strcpy (iqp->convert, iqp->convert_len, p); |
| } |
| } |
| |
| |
| /* inquire_via_filename()-- Inquiry via filename. This subroutine is |
| * only used if the filename is *not* connected to a unit number. */ |
| |
| static void |
| inquire_via_filename (st_parameter_inquire *iqp) |
| { |
| const char *p; |
| GFC_INTEGER_4 cf = iqp->common.flags; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0) |
| *iqp->exist = file_exists (iqp->file, iqp->file_len); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0) |
| *iqp->opened = 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0) |
| *iqp->number = -1; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0) |
| *iqp->named = 1; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0) |
| fstrcpy (iqp->name, iqp->name_len, iqp->file, iqp->file_len); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0) |
| cf_strcpy (iqp->access, iqp->access_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0) |
| { |
| p = inquire_sequential (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->sequential, iqp->sequential_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0) |
| { |
| p = inquire_direct (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->direct, iqp->direct_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0) |
| cf_strcpy (iqp->form, iqp->form_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0) |
| { |
| p = inquire_formatted (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->formatted, iqp->formatted_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0) |
| { |
| p = inquire_unformatted (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->unformatted, iqp->unformatted_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0) |
| *iqp->recl_out = 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0) |
| *iqp->nextrec = 0; |
| |
| if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0) |
| cf_strcpy (iqp->blank, iqp->blank_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0) |
| cf_strcpy (iqp->position, iqp->position_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0) |
| cf_strcpy (iqp->access, iqp->access_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_READ) != 0) |
| { |
| p = inquire_read (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->read, iqp->read_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0) |
| { |
| p = inquire_write (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->write, iqp->write_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0) |
| { |
| p = inquire_read (iqp->file, iqp->file_len); |
| cf_strcpy (iqp->readwrite, iqp->readwrite_len, p); |
| } |
| |
| if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0) |
| cf_strcpy (iqp->delim, iqp->delim_len, undefined); |
| |
| if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0) |
| cf_strcpy (iqp->pad, iqp->pad_len, undefined); |
| } |
| |
| |
| /* Library entry point for the INQUIRE statement (non-IOLENGTH |
| form). */ |
| |
| extern void st_inquire (st_parameter_inquire *); |
| export_proto(st_inquire); |
| |
| void |
| st_inquire (st_parameter_inquire *iqp) |
| { |
| gfc_unit *u; |
| |
| library_start (&iqp->common); |
| |
| if ((iqp->common.flags & IOPARM_INQUIRE_HAS_FILE) == 0) |
| { |
| u = find_unit (iqp->common.unit); |
| inquire_via_unit (iqp, u); |
| } |
| else |
| { |
| u = find_file (iqp->file, iqp->file_len); |
| if (u == NULL) |
| inquire_via_filename (iqp); |
| else |
| inquire_via_unit (iqp, u); |
| } |
| if (u != NULL) |
| unlock_unit (u); |
| |
| library_end (); |
| } |